Import Expandable Graphite — Buy in wholesale FOB from Supplier in China
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Expandable Graphite
Expandable Graphite from Shandong Sungraf Carbons Co., Ltd is an intercalated natural flake graphite that expands up to 200 to 300 times its original volume when exposed to rapid heating, forming a low-density, worm-like char. This product is produced using high-purity flake graphite with sulfuric acid and nitric acid intercalation, resulting in a material with consistent expansion characteristics and thermal stability. The raw material originates from verified natural graphite sources in Shandong province, processed to meet industrial-grade purity standards.
The material typically contains 99% carbon content, with particle sizes ranging from 80 to 200 microns, and expansion volumes between 150 and 300 mL/g under standard test conditions. These properties align with standard industry benchmarks for intumescent flame retardants, where expansion volume and residual carbon yield are critical performance indicators. It is free of halogens and heavy metals, making it suitable for applications requiring compliance with RoHS and REACH regulations. The product is supplied as a dry, free-flowing powder with low moisture content, typically under 1.5%.
This grade is primarily used in fire-resistant seals, intumescent coatings for steel structures, cable wraps, and fire doors, where its ability to form an insulating char barrier is essential. Buyers include manufacturers of construction materials, automotive components, and electrical insulation systems in Europe, North America, and Southeast Asia. Packaging is in 25 kg multi-layer paper bags with inner polyethylene lining, suitable for bulk sea freight. Lead time is typically 15 to 25 days after order confirmation, and trade terms include FOB Qingdao or CIF upon request.
| Material Type | Intercalated natural flake graphite |
| Carbon Content | 99% minimum (as supplied) |
| Particle Size Range | 80 to 200 microns |
| Expansion Volume | 150 to 300 mL/g (typical range under 300°C rapid heating) |
| Moisture Content | Maximum 1.5% (typical) |
| Residual Carbon Yield | 85% to 92% (typical after 600°C combustion) |
| Intercalation Agent | Sulfuric acid and nitric acid mixture |
| Halogen Content | Undetectable (complies with RoHS) |
| Packaging | 25 kg multi-layer paper bags with inner polyethylene lining |
| Bulk Density | 0.4 to 0.6 g/cm³ (typical before expansion) |
Shandong Sungraf Carbons Co., Ltd is a manufacturer based in Qingdao, Shandong Province, with direct access to natural graphite mines in the region. The company operates a dedicated processing facility for intercalated graphite products and holds harbor-tier verification, indicating active export experience and physical presence. Their listing shows no claims regarding years in business, revenue, or client names, and no certifications are referenced beyond general compliance assertions.
The supplier focuses exclusively on the production and export of expandable graphite and related carbon materials. There is no indication of in-house R&D, laboratory testing facilities, or third-party certification audits. Response metrics are not available, suggesting limited buyer communication infrastructure. All product claims are grounded in material properties rather than corporate reputation or history.
Expandable graphite is an intercalated material that rapidly expands upon heating, making it ideal for fire protection and intumescent applications in steel structures, cables, and seals. This grade offers high expansion volume and excellent thermal stability, widely used in the production of fire doors, gaskets, and construction materials. Highly demanded in global markets for its effectiveness as a halogen-free flame retardant additive in industrial coatings and polymers.
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Sourcing Expandable Graphite from Shandong Sungraf Carbons Co., Ltd - China Import Guide
Before placing an order, verify the carbon purity, expansion volume, and moisture content with a certificate of analysis from the supplier. Confirm the material is free of halogens and heavy metals if used in regulated markets like the EU or North America. Request a sample for lab testing to ensure it meets your end-product performance thresholds, especially for fire safety certifications. Do not rely on supplier claims without third-party verification.
Confirm the Incoterms offered - FOB Qingdao is standard - and ensure the supplier provides export documentation including commercial invoice, packing list, and bill of lading. Lead time is typically 15 to 25 days after order confirmation, but this may vary with seasonality or port congestion. Payment terms are commonly 30% advance, 70% against copy of shipping documents. Verify container loading procedures to prevent moisture exposure during transit.
Conduct a pre-shipment inspection to check packaging integrity, moisture content, and label accuracy. Ensure bags are sealed and labeled with batch number and date. Request a sample from each batch for laboratory testing of expansion volume and carbon yield. Retain a portion of each shipment for quality traceability. Documentation should include a material safety data sheet and a declaration of conformity for your market's regulatory requirements.
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30 suppliersBuy Expandable Graphite in Bulk — Verified Supplier in China
When sourcing Expandable Graphite for your business, securing the right balance of quality and cost is essential. Shandong Sungraf Carbons Co., Ltd, a verified supplier based in China, offers this product with key specifications including High Expansion Grade (300:1 volume expansion ratio), Carbon Content: 90-98%, Ash: <8%, Moisture: <1%, and Particle Size: 30-80 mesh (0.18-0.60 mm), Flake Type. By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $1300/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is actively traded under HS Code 3801.90, making it a staple in the Graphite sector with strong demand from importing countries worldwide.
Expandable Graphite Specifications, Trade Terms & Pricing
Importing Expandable Graphite requires careful attention to shipping logistics, customs compliance, and secure payment terms. Shandong Sungraf Carbons Co., Ltd offers flexible shipping options such as Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. To ensure a smooth transaction, buyers should verify import duties for HS Code 3801.90 in their destination country. Common payment methods for international B2B transactions include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P). All transactions and RFQs are facilitated through EximNext, a leading import export marketplace designed to make cross-border trade secure and efficient.
About Shandong Sungraf Carbons Co., Ltd — Supplier in China
Finding trustworthy partners is the foundation of successful importing. The supplier of this Expandable Graphite has been verified on our platform. Whether you are a distributor, wholesaler, or procurement manager, you can request a free quotation, ask for product samples, and finalize your bulk purchase with confidence. EximNext hosts thousands of verified manufacturers and exporters across 200+ countries. Explore similar products in the Graphite category and connect with top-tier exporters on our comprehensive online B2B marketplace. Start your sourcing journey today.
Import Expandable Graphite — Shipping, Logistics & Customs
Importing Expandable Graphite requires careful attention to shipping logistics, customs compliance, and secure payment terms. Common shipping options include Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. Buyers should verify import duties for HS Code 3801.90 in their destination country. Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P).
Frequently Asked Questions About Expandable Graphite
What is the wholesale price of Expandable Graphite?
The current listed wholesale price for Expandable Graphite from Shandong Sungraf Carbons Co., Ltd is $1300/Bags on FOB terms from China. Prices may vary depending on order volume, packaging, and destination. For the most accurate bulk quote, send a direct RFQ to Shandong Sungraf Carbons Co., Ltd through EximNext.
What is the Minimum Order Quantity (MOQ) for Expandable Graphite?
The supplier, Shandong Sungraf Carbons Co., Ltd, has set a Minimum Order Quantity (MOQ) of 1 Bags for Expandable Graphite. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
What is the HS Code for Expandable Graphite?
For international shipping and customs clearance, Expandable Graphite is classified under HS Code 3801.90. Buyers should verify their local customs regulations to determine applicable import duties and taxes for this classification.
How can I import Expandable Graphite from China?
To import Expandable Graphite from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Shandong Sungraf Carbons Co., Ltd. Ensure you have the necessary import licenses for Graphite products in your destination country.
Is Shandong Sungraf Carbons Co., Ltd a verified supplier?
Yes, Shandong Sungraf Carbons Co., Ltd is a verified supplier on EximNext. You can view their complete company profile, business registration details, certifications, and export history before placing a bulk order.
What are the key specifications of Expandable Graphite?
The key specifications for Expandable Graphite supplied by Shandong Sungraf Carbons Co., Ltd include High Expansion Grade (300:1 volume expansion ratio), Carbon Content: 90-98%, Ash: <8%, Moisture: <1%, and Particle Size: 30-80 mesh (0.18-0.60 mm), Flake Type. For a complete technical data sheet or Certificate of Analysis (COA), send an inquiry directly to the supplier through EximNext.
What packaging options are available for bulk orders of Expandable Graphite?
Shandong Sungraf Carbons Co., Ltd offers Expandable Graphite with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Which countries import Expandable Graphite the most?
Expandable Graphite is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Shandong Sungraf Carbons Co., Ltd through our platform.
What certifications does this Expandable Graphite supplier hold?
Shandong Sungraf Carbons Co., Ltd maintains international quality certifications. These ensure that the Expandable Graphite meets international quality, safety, and regulatory standards required for cross-border trade.
How do I place a bulk order for Expandable Graphite on EximNext?
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Shandong Sungraf Carbons Co., Ltd will respond with a detailed wholesale quote including FOB pricing, lead time, and payment options.
What payment methods are accepted?
Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), Documents against Payment (D/P), and Escrow services. Confirm accepted terms directly with Shandong Sungraf Carbons Co., Ltd.
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